We ended up at the Soyforaneo Hostel, because we had only booked three nights at the Aguacate, and decided to stay longer in Monterrey. So we started looking for another hostel on the internet and found this one, which seems to be the best hostel in Monterrey. It was definitely better than the Aguacate Hostel. The staff is more professional and the hostel totally achieves a European standard. What I liked is that they also have small rooms, so my friends and I shared a 4-bed room. The beds were very comfortable and the rooms were pretty spacious. They also had wireless Internet, which I accessed with small difficulty, but I finally managed to access it and I was really thankful for that. Don't hesitate to go there!